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-rw-r--r--src/fl2k_fm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/fl2k_fm.c b/src/fl2k_fm.c
index 0b2dd28..4aae95b 100644
--- a/src/fl2k_fm.c
+++ b/src/fl2k_fm.c
@@ -94,6 +94,8 @@ void usage(void)
"\t[-f FM deviation (default: 75000 Hz, WBFM)]\n"
"\t[-i input audio sample rate (default: 44100 Hz for mono FM)]\n"
"\t[-s samplerate in Hz (default: 100 MS/s)]\n"
+ "\t[--rds (enables RDS, forces audio sample rate to 228 kHz)]\n"
+ "\t[--stereo (enables stereo, requires audio sample rate >= 114 kHz)]\n"
"\tfilename (use '-' to read from stdin)\n\n"
);
exit(1);